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Natuurwetenskappe

Energie-oordrag en kragte

Opvoeders afdeling

Memorandum

  • Voorbeelde van selfassessering by die module ingesluit om leerder se bydrae tot die debat te assesseer asook ‘n kontrolelys vir die navorsingstaak.

Leerder afdeling

Inhoud

Aktiwiteit: om die verstandige aanwending van die aarde se hulpbronne te beklemtoon [lu 3.2]

NAVORSINGSTAAK

a. Doen navorsing oor die kernongeluk wat in 1986 by Chernobyl in Rusland plaasgevind het. Skryf ten minste een folioblad oor die skrikwekkende gevolge van die ramp ten opsigte van die inwoners, asook die omgewing.

of

b. Vind uit wat met die seelewe gebeur wanneer skepe olie lek.

c. Hou ‘n klasdebat. Verdeel in twee groepe.

Die een groep moet teen kernkrag betoog, terwyl die ander groep ten gunste van die gebruik daarvan moet argumenteer.

Gebruik jou kennis van kernbrandstowwe en fossielbrandstowwe, asook van hernubare energiebronne (die son, wind en water) om jou argumente voor te berei.

Gebruik die volgende vraelys om jou insette te assesseer.

SelfassesseringNavorsing
Naam : ___________________________________________________________
Onderwerp : ______________________________________________________
Graad : ___________________________________________________________
LEERDER OPVOEDER
JA NEE JA NEE
Het jy meer as een bron gebruik?
Is jy seker dat jy deurgaans jou eie woorde gebruik het?
Het jy ‘n sinvolle inleiding?
Het jy die opdrag geniet?
Het jy jou kennis verbreed deur die uitvoer van die opdrag?

Selfassessering

Debatvoering

Naam:

Datum:

Altyd Soms Nooit
Het ek my argumente duidelik gestel?
Het die ander na my argumente geluister?
Het ek my groeplede se argumente ondersteun?
Kon ek uitbrei op my groeplede se argumente?
Het ek die gepaste woorde gebruik?
Kon ek die ander groep se argumente weerlê?

Besparing van energie

Alternatiewe energiebronne soos windenergie is wel omgewingsvriendelik, maar baie duur. Ons sal dus moet voortgaan om fossielbrandstowwe (steenkool,olie, gas, hout, ens.) te gebruik. Hoewel nuwe steenkool- en oliereserwes steeds ontdek word, sal dit uiteindelik uitgeput raak. Dit is dus uiters belangrik dat ons ons energiebronne so doeltreffend as moontlik gebruik.

Elektrisiteit is gerieflik en prakties, maar dit moet opgewek word en daar is kostes aan verbonde. Elektriese toestelle word volgens hulle verbruik van elektrisiteit geklassifiseer. Dit word in watt of kilowatt (1 000 watt) gemeet. Elektrisiteitsrekeninge word bereken volgens die getal eenhede wat deur die elektrisiteitsmeter aangedui word. Die eenheid is kilowatt-uur – dit is die elektrisiteit wat per uur deur ‘n 1 kilowatt-toestel verbruik word. ‘n Outomatiese wasmasjien word gewoonlik as ‘n 3 kilowattt-toestel beskou. Dit beteken dat ‘n mens vir elke uur wat die wasmasjien deurlopend werk, ‘n rekening vir drie eenhede moet verwag.

Assessering

Leeruitkomste 3: Die leerder is in staat om begrip van die onderlinge verband tussen wetenskap en tegnologie, die samelewing en die omgewing te toon .

Assesseringstandaard 3.2: Dit is duidelik wanneer die leerder die volhoubare gebruik van die aarde se hulpbronne verstaan: ontleed inligting oor volhoubare en nie-volhoubare gebruik van hulpbronne.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Natuurwetenskappe graad 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11078/1.1
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